Plumbing Permit — Longview, Washington · Requirements sheet
Verified 2026-09-16 · Source: https://ecode360.com/48937991
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Plumbing Permit in Longview, Washington
Plumbing work in Longview is governed by the 2021 Uniform Plumbing Code — unless the applicant elects the 2021 International Plumbing Code in writing at application.
Verified 2026-09-16 · Source
When you need this permit
- “Chapter 51-56 WAC (2021 Uniform Plumbing Code and Uniform Plumbing Code Standards)” (LMC 16.02.010)
- ALTERNATE AVAILABLE BY WRITTEN ELECTION: “When requested in writing by the permit applicant, on the permit application, the 2021 International Plumbing Code shall be considered an approved alternate” (LMC 16.02.020, IBC 101.4.3 as amended)
- “When approved Alternate plumbing codes are utilized, the entire plumbing installation shall be installed and governed under the provisions of the alternate code.” — no mixing
- State of Washington requirements for private sewage disposal apply to private systems
- LMC 16.02.060 contains further additions and changes to Chapter 51-56 WAC and was NOT opened for this entry
Required documents
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Fee schedule
LMC 16.02.020 Section 109.6: “Not more than 80 percent of the permit fee paid when no work has been done”, and the same cap on plan review fees where an application is withdrawn or cancelled “before… Show full citationHide
LMC 16.02.020 Section 109.6: “Not more than 80 percent of the permit fee paid when no work has been done”, and the same cap on plan review fees where an application is withdrawn or cancelled “before any plan review effort has been expended.” Written application required “not later than 180 days after the date of fee payment.”Review timeline
Inspection process
Tips
- This is the only city in this Washington set where YOU pick the plumbing code. The Uniform Plumbing Code governs by default, but the 2021 International Plumbing Code is an approved alternate if you request it in writing on the permit application — and then the entire installation must follow the alternate, so it is an all-or-nothing choice made before work starts.
- The election is procedurally fragile: the code specifies the request must be in writing and on the application itself. Decide before you file rather than after the plan reviewer raises a UPC comment.
Frequently asked questions
Sources & verification
Verified against official sources. Last reviewed 2026-09-16.
Codes & ordinances
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Longview building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
Longview's permit history isn't searchable here yet
This page covers what the permit requires. What we don't have for Longview yet is the record of permits actually issued — the history you'd search by street address. That is a gap in our coverage, not a statement about any particular property.
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